geology vs archeozoic

geology is a noun but archeozoic is not a noun.

Word	Noun	Adjective	Verb	Adverb
geology	Yes	No	No	No
archeozoic	No	Yes	No	No

geology (noun)	archeozoic (noun)
a science that deals with the history of the earth as recorded in rocks

geology (adjective)	archeozoic (adjective)
	of or belonging to earlier of two divisions of the Precambrian era